Roberto Alvarez defeated Rafael Serpa Guinazu 4-6 7-5 6-4 in the Argentina 3 Masters 2 qualifying round on clay. The upset overturned the form book — Rafael Serpa Guinazu came in leading the head-to-head 2–0. Roberto Alvarez claimed a first win over Rafael Serpa Guinazu in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1995-04-01 | Argentina 1 Masters 1 | QF | clay | Rafael Serpa Guinazu | 6-1 6-4 |
| 1993-08-14 | Argentina 3 Masters 4 | R32 | clay | Rafael Serpa Guinazu | 7-5 6-3 |